43838138 has 32 divisors (see below), whose sum is σ = 73923840. Its totient is φ = 19388160.

The previous prime is 43838131. The next prime is 43838153. The reversal of 43838138 is 83183834.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (43838131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47243 + ... + 48161.

It is an arithmetic number, because the mean of its divisors is an integer number (2310120).

Almost surely, 2^43838138 is an apocalyptic number.

43838138 is a deficient number, since it is larger than the sum of its proper divisors (30085702).

43838138 is a wasteful number, since it uses less digits than its factorization.

43838138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its digits is 55296, while the sum is 38.

The square root of 43838138 is about 6621.0375319885. The cubic root of 43838138 is about 352.6014006690.

It can be divided in two parts, 4383 and 8138, that added together give a palindrome (12521).

The spelling of 43838138 in words is "forty-three million, eight hundred thirty-eight thousand, one hundred thirty-eight".